/post/ and /post-2/ Questions

I upgrated to 1.5 about a month ago and noticed through Google sitemaps, that a lot of my posts went 404, because of duplicate titles. It appears that 1.5 has changed them to /post-2/. Out of 8 posts I just caught today, all of them had se ranks, pagerank and inbound links that I’d hate to lose. Is there any way to go back to modify anything so you can have the duplicate titles, just different date slugs? Any work around this? Thanks.

Thanks, but I couldn’t seem to find anything there. Perhaps I’m just sleepy. BTW, does anyone know if I should be getting this “error” when the post-slugs are the same, but on completely different days? It would seem that my urls are unique due to the month/days permalinks, but I guess they’re not in wordpress’ eyes? This only seems to be a problem with 1.5 and up too. Just looked at a site with an earlier version and it’s not giving that “error”